A 3 pc Scale Jet-driven Outflow from Sgr A*

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dc.contributor.authorYusef-Zadeh, F.
dc.contributor.authorArendt, Richard
dc.contributor.authorBushouse, H.
dc.contributor.authorCotton, W.
dc.contributor.authorHaggard, D.
dc.contributor.authorPound, M. W.
dc.contributor.authorRoberts, D. A.
dc.contributor.authorRoyster, M.
dc.contributor.authorWardle, M.
dc.date.accessioned2022-06-09T16:36:15Z
dc.date.available2022-06-09T16:36:15Z
dc.date.issued2012-09-21
dc.description.abstractThe compact radio source Sgr A* is coincident with a 4 × 106 M☉ black hole at the dynamical center of the Galaxy and is surrounded by dense orbiting ionized and molecular gas. We present high-resolution radio continuum images of the central 3' and report a faint continuous linear structure centered on Sgr A* with a P.A. ∼ 60°. The extension of this feature appears to be terminated symmetrically by two linearly polarized structures at 8.4 GHz, ∼75'' from Sgr A*. A number of weak blobs of radio emission with X-ray counterparts are detected along the axis of the linear structure. The linear structure is best characterized by a mildly relativistic jet from Sgr A* with an outflow rate 10−6 M☉ yr−1. The near and far sides of the jet are interacting with orbiting ionized and molecular gas over the last 1–3 hundred years and are responsible for a 2'' hole, the "minicavity," characterized by disturbed kinematics, enhanced Fe ii/iii line emission, and diffuse X-ray gas. The estimated kinetic luminosity of the outflow is ∼1.2  ×  1041 erg s−1, so the interaction with the bar may be responsible for the Galactic center X-ray flash inferred to be responsible for much of the fluorescent Fe Kα line emission from the inner 100 pc of the Galaxy.en_US
dc.description.sponsorshipThis work is partially supported by the grant AST-0807400 from the NSF and DP0986386 from the Australian Research Council. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities.en_US
dc.description.urihttps://iopscience.iop.org/article/10.1088/2041-8205/758/1/L11en_US
dc.format.extent8 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2xmpd-qjfo
dc.identifier.citationYusef-Zadeh, F., “A 3 pc Scale Jet-driven Outflow from Sgr A*”, The Astrophysical Journal Letters, vol. 758, no. 1, 2012. doi:10.1088/2041-8205/758/1/L11.en_US
dc.identifier.urihttps://doi.org/10.1088/2041-8205/758/1/L11
dc.identifier.urihttp://hdl.handle.net/11603/24874
dc.language.isoen_USen_US
dc.publisherIOP Scienceen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.titleA 3 pc Scale Jet-driven Outflow from Sgr A*en_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-8403-8548en_US

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